ALSA: usb-audio: Fix use-after-free in snd_usb_mixer_free() (Linux Linux)

CVE-2026-23089
HIGH 7.8

At a glance

Source
NVD
EPSS
EPSS 0.16 % · percentile 5 ()
State
PUBLISHED
Published
Updated
Assigner
Linux
NVD status
Modified

Description

In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-audio: Fix use-after-free in snd_usb_mixer_free() When snd_usb_create_mixer() fails, snd_usb_mixer_free() frees mixer->id_elems but the controls already added to the card still reference the freed memory. Later when snd_card_register() runs, the OSS mixer layer calls their callbacks and hits a use-after-free read. Call trace: get_ctl_value+0x63f/0x820 sound/usb/mixer.c:411 get_min_max_with_quirks.isra.0+0x240/0x1f40 sound/usb/mixer.c:1241 mixer_ctl_feature_info+0x26b/0x490 sound/usb/mixer.c:1381 snd_mixer_oss_build_test+0x174/0x3a0 sound/core/oss/mixer_oss.c:887 ... snd_card_register+0x4ed/0x6d0 sound/core/init.c:923 usb_audio_probe+0x5ef/0x2a90 sound/usb/card.c:1025 Fix by calling snd_ctl_remove() for all mixer controls before freeing id_elems. We save the next pointer first because snd_ctl_remove() frees the current element.

Weaknesses (CWE)

References

Scores

VersionScoreVectorScored by
CVSS 3.1HIGH 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HNVD · nvd@nist.gov (Primary)

European references

CERT-FR advisories

Affected configurations (NVD CPE)

Affected products

ProductVersions
Linux · Linuxaffected 6639b6c2367f884ca172b78d69f7da17bfab2e5e < 51b1aa6fe7dc87356ba58df06afb9677c9b841ea ; affected 6639b6c2367f884ca172b78d69f7da17bfab2e5e < 56fb6efd5d04caf6f14994d51ec85393b9a896c6 ; affected 6639b6c2367f884ca172b78d69f7da17bfab2e5e < 7009daeefa945973a530b2f605fe445fc03747af ; affected 6639b6c2367f884ca172b78d69f7da17bfab2e5e < 7bff0156d13f0ad9436e5178b979b063d59f572a ; affected 6639b6c2367f884ca172b78d69f7da17bfab2e5e < e6f103a22b08daf5df2f4aa158081840e5910963 ; affected 6639b6c2367f884ca172b78d69f7da17bfab2e5e < dc1a5dd80af1ee1f29d8375b12dd7625f6294dad
Linux · Linuxaffected 2.6.13 ; unaffected 0 < 2.6.13 ; unaffected 5.10.249 ≤ 5.10.* ; unaffected 5.15.199 ≤ 5.15.* ; unaffected 6.1.162 ≤ 6.1.* ; unaffected 6.6.122 ≤ 6.6.*

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD